45255730 has 32 divisors (see below), whose sum is σ = 88071984. Its totient is φ = 16644096.

The previous prime is 45255647. The next prime is 45255761. The reversal of 45255730 is 3755254.

It can be written as a sum of positive squares in 8 ways, for example, as 18722929 + 26532801 = 4327^2 + 5151^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 45255692 and 45255701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43294 + ... + 44326.

Almost surely, 2^45255730 is an apocalyptic number.

45255730 is a deficient number, since it is larger than the sum of its proper divisors (42816254).

45255730 is a wasteful number, since it uses less digits than its factorization.

45255730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 45255730 is about 6727.2379176004. The cubic root of 45255730 is about 356.3618391039.

The spelling of 45255730 in words is "forty-five million, two hundred fifty-five thousand, seven hundred thirty".